diff --git a/proposals/threads/Overview.md b/proposals/threads/Overview.md
index 6aed7038c5..4ca9e955b3 100644
--- a/proposals/threads/Overview.md
+++ b/proposals/threads/Overview.md
@@ -186,7 +186,7 @@ For example:
   ...)
 
 WebAssembly.instantiate(dataModuleBytes, {}).then(
-    ({instance} => {
+    ({instance}) => {
         let imports = {env: {memory: instance.exports.memory}};
         WebAssembly.instantiate(mainModuleBytes, imports).then(...);
     });